Structure of a macroporous silica film as an interlayer of a laminated glass

A macroporous silica film (MSF) was introduced as a buffer layer of material between a silicate glass (SG) layer and a polyurethane (PU) layer to form a new aeronautic laminated glass. Structure simulations of MSF were performed using the ANSYS software. Pore models, porosity factor models, and thickness models were established. X-direction stress, Y-direction stress, and equivalent stress of the models were determined. Simulation results indicate that the pore can effectively depress shear stress on the MSF–PU interface. Moreover, maximum X-direction stress, maximum compressive stress, and maximum equivalent stress on the MSF–PU interface all decrease rapidly and then increase slowly by increasing film thickness.